(9H-fluoren-9-yl)methyl 4-[(3-{[(tert-butoxy)carbonyl]amino}-5-iodo-4-methylphenyl)methyl]piperazine-1-carboxylate

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(1,3-thiazol-5-yl)propanamido]propanoic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(1,3-thiazol-5-yl)propanamido]-2-methoxypropanoic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(1,3-thiazol-5-yl)propanamido]-2-hydroxybutanoic acid

3-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylhex-4-enoyl]azetidin-3-yl}propanoic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylhex-4-enoyl]thiomorpholine-2-carboxylic acid

Methyl 1-(chlorosulfonyl)-2-methylpiperidine-3-carboxylate

(2S)-3-(dimethylamino)-2-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanamido]propanoic acid

1-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-5-methylpiperidine-3-carboxylic acid

1-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-6-methylpiperidine-3-carboxylic acid

2-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-methylpropanoic acid